Commonwealth legislation

AD/B737/189 - Rudder Feel and Centering Unit

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Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

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This Airworthiness Directive requires operators of Boeing 737-600, -700, -700C, -800 and -900 series aircraft (line numbers 948–1108) to carry out the corrective actions set out in FAA AD 2002-16-23 (and Boeing Alert Service Bulletin 737-27A1259) to fix broken inner springs in the rudder feel and centering unit that can remove pedal centring and cause pilot‑induced oscillation (Requirement; Background). The work must be completed within 10 days after 4 September 2002 and thereafter as the FAA AD prescribes; CASA enforces compliance under CAR 1998 subreg 39.1(1) (Compliance).

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AIRWORTHINESS DIRECTIVE

View image in the official source

View image in the official source
For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

Boeing 737 Series Aeroplanes

AD/B737/189 Rudder Feel and Centering Un

AD/B737/189 Rudder Feel and Centering Unit 11/2002

Applicability: Model 737-600, -700, -700C, -800, and -900 series aircraft, line numbers 948 through

Requirement: Action in accordance with the technical requirements of FAA AD 2002-16-23 Amdt 39-12862.

Note: Boeing Alert Service Bulletin 737-27A1259 refers.

Compliance: Within 10 days after 4 September 2002 for the initial requirement. Thereafter as specified in the Requirement document, with a revised effective date of 4 September 2002.

This Airworthiness Directive becomes effective on 4 September 2002.

Background: The FAA has received reports of low rudder pedal forces caused by a broken inner spring in the rudder feel and centring unit on some new generation Model 737 aircraft. Investigation of the broken springs revealed an incorrect process used on a specific batch of inner springs. In the event that both the inner and outer springs fail, the pedal feel and centring forces will be lost. This condition, if not corrected, could result in pilot- induced oscillation and consequent loss of control of the aircraft.

Signature of David Villiers, Delegate of the Civil Aviation Safety Authority.

David Alan Villiers

Delegate of the Civil Aviation Safety Authority 28 August 2002

View image in the official source

The above AD is notified in the Commonwealth of Australia Gazette on 4 September 2002.

Source text

Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.

AIRWORTHINESS DIRECTIVE AIRWORTHINESS DIRECTIVE

AIRWORTHINESS DIRECTIVE

For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

Boeing 737 Series Aeroplanes

AD/B737/189 Rudder Feel and Centering Un AD/B737/189 Rudder Feel and Centering Unit 11/2002

AD/B737/189 Rudder Feel and Centering Unit 11/2002

Applicability: Model 737-600, -700, -700C, -800, and -900 series aircraft, line numbers 948 through

Requirement: Action in accordance with the technical requirements of FAA AD 2002-16-23 Amdt 39-12862.

Note: Boeing Alert Service Bulletin 737-27A1259 refers.

Compliance: Within 10 days after 4 September 2002 for the initial requirement. Thereafter as specified in the Requirement document, with a revised effective date of 4 September 2002.

This Airworthiness Directive becomes effective on 4 September 2002.

David Alan Villiers

Delegate of the Civil Aviation Safety Authority 28 August 2002

The above AD is notified in the Commonwealth of Australia Gazette on 4 September 2002.